ㄐㄧㄠjiāoㄏㄨㄢˋhuàn

  1. 相互調換·杜佑通典·五七··斥候分布》:虞候軍職初發交換軍營虞候使排比。」水滸傳·》:明日小將相交。」調換互換換取交流相易

to exchange, to swap, to switch (telecom)​, commutative (math)​, to commute
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Austausch